Lady GaGa claims chart milestone with second No. 1

NEW YORK (Billboard) - Lady GaGa has become the first artist in nearly ten years to reach the top of the Billboard Hot 100 singles chart with her first two chart entries.

The New York pop singer's "Poker Face" rose one place to end the six-week reign of Flo Rida's "Right Round." She previously led the list for three weeks with her Grammy-nominated tune "Just Dance" in January.

The last performer to launch with a pair of Hot 100 chart-toppers was Christina Aguilera, who reigned with "Genie in a Bottle" (1999) and "What a Girl Wants" (2000). The only other women to achieve this feat in the last 25 years were Mariah Carey (1990) and Tiffany (1987).